Subsurface Characterization of Mesaverde Reservoirs in Colorado: Geophysical and Reservoir-Engineering Checks on Predictive Sedimentology
John C. Lorenz, Norman R. Warpinski, Paul T. Branagan, 1991. "Subsurface Characterization of Mesaverde Reservoirs in Colorado: Geophysical and Reservoir-Engineering Checks on Predictive Sedimentology", The Three-Dimensional Facies Architecture of Terrigenous Clastic Sediments and its Implications for Hydrocarbon Discovery and Recovery, Andrew D. Miall, Noel Tyler
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The geometries of nonmarine-sandstone reservoirs of the subsurface Mesaverde Group in northwestern Colorado were estimated on the basis of sedimentologic studies. The accuracy of the estimates was subsequently assessed by geophysical tests and reservoir-engineering studies, such as vertical seismic profiles, hydraulic-fracture diagnostics, pressure tests (drawdown/buildup, production, and interference tests), and tracer tests. After the effects of natural fractures on these subsurface tests are accounted for, the tests provide indications of reservoir boundaries, internal heterogeneity, and continuity that are compatible with sedimentologic predictions.